Format

Send to

Choose Destination
Brain Res. 2018 Jun 1;1688:47-53. doi: 10.1016/j.brainres.2018.03.011. Epub 2018 Mar 17.

Antiepileptic effect of uridine may be caused by regulating dopamine release and receptor expression in corpus striatum.

Author information

1
Department of Clinical Pharmacy, Chinese PLA General Hospital, Fuxing Road 28(#), 100853 Beijing, PR China; Key Laboratory of Neurodegenerative Diseases, Ministry of Education, Changchun Road 45(#), 100053 Beijing, PR China.
2
Department of Clinical Pharmacy, Chinese PLA General Hospital, Fuxing Road 28(#), 100853 Beijing, PR China.
3
Key Laboratory of Neurodegenerative Diseases, Ministry of Education, Changchun Road 45(#), 100053 Beijing, PR China.
4
Department of Pharmacology, Shenyang Pharmaceutical University, Box31, Wenhua Road 103#, 110016 Shenyang, PR China. Electronic address: klezmer@126.com.

Abstract

Uridine is a potential endogenous neuromodulator studied for several decades for its antiepileptic effect, but the results were controversial. One remarkable feature of uridine is its regulatory action on the dopaminergic pathways. In this study, the changes in uridine and dopamine (DA) release were examined in the mouse corpus striatum after pilocarpine (PC) intraperitoneal injection. Then, the effect of uridine pre-treatment on DA release and expression of dopamine receptor (DR) was determined. The results revealed an increased uridine release initially, followed by a downward trend after an injection of 400-mg/kg PC. However, the DA release continuous increased significantly. The expression of dopamine receptor-1 (D1R) increased in a dose-dependent manner while that of dopamine receptor-2 (D2R) decreased significantly. Prophylactic administration of uridine significantly relieved the high-frequency and high-amplitude expression induced by PC as well as dose-dependently reversed the PC-induced changes in DA and DRs levels. These findings suggested that uridine produced an antiepileptic effect, which might have been mediated in part by interfering with the dopaminergic system.

KEYWORDS:

Corpus striatum; Dopamine; Electroencephalogram; Epilepsy; Microdialysis; Uridine

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center